Fuel feeding and metering system



Dec. 13, 1927. 1,652,515

'r. A. BANNING, JR

FUEL FEEDING AND METERING SYSTEI Filed July 13. 1925 6 Sheets-Sheet l 33 85, 63 95 i: I /ff/ a "f4 f3 I i x 49 i /07a /OX J7 741/6 l LM T'g, 6.

Devn 13, 1927.

1,652,515 T. A. BANNING. JR

FUEL FEEDING AND METERING SYSTEM Filed July 13, 1925 6 Sheets-Sheet 2 Dec. 13, 1927.

T. A. BANNING. JR

FUEL FEEDING AND METERING SYSTEM 6 Sheets-.Sheet 3 Filed July 13, 1925 Dec. 13, 1927. 1,652,515

T. A. BANNING. JR

FUEL FEEDING AND METERING SYSTEM Filed July 13. 1925 6 Sheets-Sheet 4 T/Lg. gg 7 /4/2` 1% /l// /7 tra la# /59 Dec. 13, 1927. 1,652,515

T. A. BANNING, .1R

FUEL FEEDING AND METERING SYSTEM Wfl/000..,

M' -f a Patented Dec. 13, 1927.

- lUNITED sTA'TES 'rizomas a BANKING, JR., or WILMETTE, ILLINOIS.

A FUEL FEEDING METERING SYSTEM.

Application tiled l'uly 13,

nal combustionengines, such as are 4used for' thel propulsion of automotive vehicles, but it will presently appear that the 'features of the invention may also be used for 'manly1 other classes' of service. Therefore, I -wis l`l0 it -clearly understood'that I .do-"not intend to limit. myself -to the-particularclass 'of service above mentiof'ehA vexcept as =I` may do so in theclaims. .fl- A One of the features of .the .inventionvhas 'l5 t'o do with the provision of means for metering the fuel against ltheV work performedQby the engine, such` forfexamnle.- as metering the fuel against the". roadtr'avel of a vehicle. This'feature `of the 'inventuion"hasv to do, among others, with the :provision of an arrangement whereby/"an indication o f the economy of operation will -be periodically 'given in miles per gallon or other suitable ratio.

V-In connection with the foregoin it is an object of the invention to provi e an arrangement whereby the fuel may be metered a ainst road travel on the basis of equal distances of travel, giving a. corrected read- .10 ing of the desired ratio at the completion ofA each unit of travel. Such indicated ratio is maintained until the completion of another unit of road travel whereon a new and corrected reading is given based upon the performance of the next unit of road travel. In connection with the above, it is an object of the invention to provide means for giving the indication at a convenient point, as, for example, the dash board of the vehicle, by the vuse of a positive mechanicalconnec- .tion between the metering device and the dash board, as ldistinguished from an indication based uponv hydrostatic pressure or the like. More particularly it is anobject to establish the indication at the dash board by the use of one or more floats workin in conjunctio with the liquidfuel itsel .so that the positions of said floats serve to actuate the indicating mechanism.

Another feature in connection with the foregoing is' the provision of means for givin g the indication by the use of a. common indicator working in conjunction with a plui'ality of metering devices` and by the use of 5.'. mechanical connections between all of the metering devices and the common indicator,

.be used throughout the usual workin 19'25. smal ne. 43,117.

which connections are, however,` so arranged as to function in--the desired manner.

Another featureof the invention relatesto the provision of an arrangement such that 60 substantially uniform scale divisions: may

ortion of the indicator scale, andzwith-t epuse of metering chambers -of-uniform cross section, notwithstanding the fact that the ratio of thedistance traversed per unit consumed is an inverse-ratio. This will make it possible to use metering chambers of full size throughout their vertical dimension, and at the same time secure the desirable result of a scale having its divisions uniformly spaced throughout its normal working range.

A further feature of the invention relates 1 to the provision of means for insurin a continuous and uninterrupted supply of uel to the engine notwithstanding excessive fuel consumption per unit of distance traversed, and in this connection, it is an object to provide an arrangement such that the devicewill automatically continue to supply fuel to the engine uninterruptedly for an indefinite length ofh-time. even in those cases in which there is no road travel whatsoever.

A further feature in connection with the foregoing is the provision of an arrangement such that if at any time the ratio of distance traversed per unit of fuel consumed should -fall below acertain low limit,4 the device Vwill immediately commence to deliver fuel to the engine independently of any meteringagainst road travel and will continue to do so until reset by the driver. Thereupon it will again commence to meter against road travel and indicate periodically corrected ratios.

A furt-her object in connection with the foregoing is the provision of means for giving an indication to the driver of the fact that, the ratio of distance traversed per unit of fuel consumed has fallen below a certain degree, so that the driver will beadvised of the existence of some abnormal condition of operation, such as dragging brakes, flat tire, missing spark plug, or any other of numerous conditions which would result in such low economy.

Another feature of the invention relates to the provision of means for metering the fuel against road travel in conjunction with any suitable system of delivering the fuel to the engine. For example, the arrangement may be used either in connection with vacuum by the use of additional connectionsto the feed systems "of the different well-known types, or with gravity feed systemsor with pressure feed systems, or in connection with fuel pumping devices suchas electrically` -driven fuel pumps. v

both of thel foregoing results within asingle.

device of extremely simple form andy-.con-

struction and without the -use of supple-l mental metering arrangements and simply metering devices themselves for givingthe accumulated reading. I

A11-object in connection with the foregoing is to provide means for indicating the-accumulated reading at the dash board, laud-preferably within the same indicating instrument as is used forfshowing the periodically corrected ratio. In other words, the same indicating device will show both miles per gallon7 for example, and accumulated gallons.

Another feature in connection with the accumulating devices is the provision of means for showing the amount of fuel in the storage tank, so that the driver. will be at all times informed as tothe amount .of fuel still available besides being informed ofthe miles per gallon. In this connection, it is an object to provide an arrangement which will give a very accurate indication of amount of fuel in the tank by accurately metering the amount of fuel withdrawn therefrom. In this case, the. accumulated reading of quantity is a negative value and causes a continuously reducing reading as the fuel is consumed.

A further feature in eonnection'with the foregoing is the provision of means for increasing the indicated amount of fuel in the storage tank wheneveu fuel is introduced thereinto so as to again reset the indicated reading to the higher corrected figure, so as to at all times indicated the actual amount of fuel available. 'lhis resetting may be accomplished either manually or automatically as the fuel is delivered into the storage tank.

Another object of the invention is to provide automatic means for resetting the indicator to the higher ligure as fuel is introduced into the tank, thereby. eliminating error and uncertainty duc. to manual operations. In this connection, it is an object to secure the automatic resetting when desired by the. use of an extremelyv simple metering device at the storage tank itself, which lnetex-, ing device is or may be connected to the dash board indicator.

It-may also be said that another object is will appear from to provide Aa metering .dev icefor `metering the fuel as it is -delivered in to fthe storage withrvery few..machine very low cost-5f; 2

therrj .objects 'j and @uses of the invention a. detailed description of the same, which consist s ;in thefeaturesof construction and combinations of parts hereinafter .described and claimed.

In ,the drawings: ,A

Figure 1 lshows a vertical section-through an instrument embodying the features of the present invention showing the .manner in which the same may be associated with the vacuum fuel feeding system of familiar form and construction. The particular fuel mctering device illustrated in Fig. 1 is provided with a flexible -cord lconnection to the indicator itself;

F ig. 2V shows au longitudinal operations f and `at conjunction withthe device of F ig. l,;

Fig. 3 shows a side elevation of the cani slot tube o'f the indicator of Fig. 2;

Fig. 4 shows a face view of the indicator scale of the device of Fig. 2;

Figs. 5 and 6, respectively. show horizontal sections on the lines 5`5 and (L -6 of Fig. 1, looking in the direction of thefarrows;

Fig. 7 shows a plan view of the device of Figs.v 8 and 9 are horizontalv sections through the device of Fig. 1. looking in .the direction of the arrows;

Figs. 10 and 11 are fragmentaryvertical sections through thc device of Fi-g. 1. and looking in the directions of theI arrows shown in Fig. 9; i

Fig. 12 is a vertical section through a modified construction of device in which th:` indication of the. desired ratio is given hv the use of a rotary connection to thc indicator as distinguished from :i' tension device of the arrangement: of Fia. l

Fig. 13 shows a plan vien' of the device of Fig. 12;

Fig. 14 shows a horizontal .ecctiongonthe line 14-14 of Fig. 12. looking in the direction of the arrows;

Fig. 15 shows diagrammatically a System or independently.

vices of lextremely'simple andrug'ged -form and construction A whichxmn easilymade fromdieeastingsand sheet meta-l stampings section 4through a dash vboard lndicatorfor use in lim of connecting up devices such as those of Figs. 1 and 12, together with a vacuum fuel feed system for supplying the fuel which is metered through the device and against roadV travel, the road travel connection being effected to the speedometer drive shaft;

Fig. 16 shows a vertical section through another form of the device which is provided with supplemental connections for accurately metering the quantity of fuel fed to the engine;

'Fig'. V17 is x Fig. 16, a portion of one of the being broken away;

Figs. 18 ,and 19 are .horizontal-sections on lines 18?18 and 19-19 .of Fig. 16, looking in the direction ofthe arrows;- y

Fig. 20 is a fragmentary elevation of the back side of the lower portion o f the device of Fig. 16;

Fig. 21 is a face vieiv of a `dash board indicator for use in connection with the device of Figs. 16, 17, 18 and 19 for showing both miles per gallon and gallons of gas in the storage tank;

Fig. 22 is a back view o f the device of Fig. 21, the back cover plate being broken away and shown in section;

Fig. 23 isa vertical section on the lines 23-23 of Figs. 21, and 22, looking in the direction of the arrows;

Fig. 24 isa horizontal section on the lines 24--24 of Figs. 22 and 23. looking in the. direction ofthe arrows;

Fig. 25 is a. vertical' section through a metering device for metering the fuel as it is supplied to the storage tank. said metering device being so constructed that it can be directly applied to the ller opening ot' gear ra tchets the storage tank;

Fig. 26 is a plan vieiv of the device of Fig. 25;

Figs. 27 and 28 are horizontal sections on the lines 27-27 and 28-28 of Fig. 25, looking in the direction of the arrows; and

Fig. 29 shows diagrammat-ically a series of connections for use with the devices of Figs. 16 to 28, inclusive, together with the vacuum -fuel feed system for supplying fuel to the engine through the metering device of the present invention, together with suitableconnections between the metering device and the dash board indicator, together with a road tra-vel connection from the speedometer drive shaft to the metering `device of the present invention. and also shows diagrammatieally a supplemental indicator for warning the driver when the miles per gallon falls below a certain predetermined point, and also shows an optional connection directly from the storage tank tothe dash board indicator for automatically resetting the indication of quantity of fuel in the storage tank without special thought or effort on the part of the driver.

a. plan view -of the device of plied to this chamber through a connection 38 from the storage tank 39 at aiconvenient point. At the upper limit of movement of the oat 34 the valves 35 and 36 are so operated as to cut off the suction from the pipe 40, which is in turnconnected to the intake ffl manifold 31 of the engine 42, and open the valve 3 6 so as to vent the upper chamber 32 and allow fuel to gravitate into thelower chamber 33 past a check valve 43. lVhen the lioat 34 reaches its lower limit of movenient the valves 35 and 36 are reversed, the vent being closed and the suction valve opened, so that a new charge of.' fuel may be drawn in to the chamber 32 through the pipe 38.

jThe above type of fuel feeding device is well known and understood in the art and is indicated herein merely by way of example of one form of device for supplying fuel to the engine. The features of the present int vention may also be used in conjunction with many other forms of fuel feed. It will, however, be understood that the level of the fuel within the chamber 33 luctuates up and down between certain upper and lower limits, and it is desirable that the metering device"of the present invention be so arranged as to take care of this fact.

The device of the present invention includes one or more chambers 44 and 45 and 4G through which the fuelis metered in turn. Preferably there are three of the chambers, the same being conveniently established within a common casing 47. By this arrangement tliere is at all times one chamber completely filled, or being filled, another chamber connected to the fuel supply to the engine, and another chamber connected to the indicator to show the miles per gallon.

Adjacent to the lower en'ds of the chambers 44` 45 and 46 there is a common control valve 48, and the chambers are provided with ports 49, 50 and 51 leading to positions adjacent to the upper portion of this valve 48 at the pla-ne of the section of Fig. 5.

At the plane of the section of Fig. 6. there is a passage 52 leading sidewise and connected with the fuel supply system hy a lino 53. Below the position of the valve, 48 is a Connection for a fuel delivery line 54 through which the fuel is delivered to the engine.

The valve'48 is provided with two segmental slots 55 and 56, as shown in Fig. 5, at the plane of the ports 49, 50 and 51, each of said slots spanning approximately 120 Iii) of arc. The other third of the valve is blanked ofi', as sho'wn in Fig. 5. At the plane of Fig. 6, and in line with the connection 52 is a circular groove 57 completely encircling the valve and also in communica-V tion with the connection 52. This groove 57 connects with the slot 55 above it by a short passage 58 within .the valve,`so that fuel 'is also supplied Vto theslot 55, and from said slot 55 to whichever chamber is at the time 'connectedthereta The other slot 56` connects by la lpassage 59 with the space directlybelow the. valve and thence with the `connection 54. Consequently, fuel is delivered from whichever chamber is at the time connected wit-h the slot' 56, through the passa e 59 to the engine.

Preferably a. ligit disk spring 60 is placed below the valve 48 sov as to exert just suflicient upward pressure thereon to keepthe valve properly seatedvbut without binding. Said spring 60 when provided should be suitabl ported, as shown in Fig. l, to allow fuel to ow readily through it. 1

Reaching up through the center portion of the device and between the chambers 44, 45 and 46 is a. passage 61. A valve stem 62 reaches through said passage having its lower end connected to the valve 48 and its upper end passing through a cover plate 63 within which it finds a bearing. On the top end of this valve stem is fastened a ratchet wheel 64 as b means of a cotter pin 65. rl`his vratchet w ieel preferably has a number of teeth equal to or a multiple of the number of chambers. In the pres t case there are nine teeth, threeto each cha iber.

Above the ratchet wheel is swingingly mounted an arm 66 on the bottom face of which is a pawl 67 which works on the ratchet wheel. A spring 68 draws the arm 66 back against a stop 69. `A worm wheel 70 is journalcd to the cover plate 63 on thestud 71, said \v orm-wheel having one or more stops 72 projectingabove its top surface and adapted to engage'the back face of a flange 73 which reaches down from one edge of the arm 66. The worm wheel 70 is driven by a y wo-m 74 from a road travel connection 7 5,

75 may be driven in any suitable manner, as,

for evample, by a special drive shaft to one oft .e road wheels 'or to thev vehicle propeller fshaft. In other cases, it will be driven in proportion to the amount-of work performed, as, for example, in 'proportionto the number of revolutions of the engine, or the'distance traversed by an aeroplane or motor boat or locomotive. The main point is that this connection is in proportion ANto thework per-.-

ratchet wheel 64 and, therefore, the valve,

the distance of one tooth. Upon the completionof three such corrections, the valve will have been brought to such a position as to insure a regroupx'ng of the'chambers 44, 45and46. f

The cover plate 63 efi'ectually seals the upper ends of all of the chambers, but reaching up from said cover-.plate arethe vent .tubes 74, 75 and 76* indicated in Figs. 1, 7

and 8 in particular. These may be established in any convenient manner. For example, in the arrangement of Figs. 1 to 11 each vent tube is a thin copper tube having its lower 'end flanged and locked in place by a nut 77.

All of the vent tubesreach to or above the highestlevel of liquid supplied to the device. For example, said tubes should reach slightly above the highest level which the liquid willA probably assume within the lower tank Y 33 of the vacuum feed system indicated.

The upper ends of all of the vent tubes are turned over into a horizontal position and brought to a common point -where they connect to a Y 78, best shown in Figs. 1 and 7. 'lhis Y preferably comprises upper and lower sheet metal stampings which when drawn together by nuts 79 firmly connect to the ends of all of the vent tubes and to a common tube 80. A vent opening 81 is provided in the Y, as shown in Fig. 7.

NVithin the chambers 44, 45 and 46 are the floats 82, 83 and 84, respectively, each of said floats being of substantial size but relatively shallow. 1f desired, the float in each chamber may be guided by a p air of vertical wires or rods 85 and 86 socketed in the lower ends of the chambers and in the cover plate. The floats may be made of any convenient form and material. For example, if of cork they are preferably effectually shellacked or otherwise protected against water logging with fuel. Preferably also in such case the holes' for the guide rods 85 and 86 should be lined, as indicated in Fig. 9.

To the upper ends of these floats there `are connected the cords 87, 88 and 89, respectively,^all of said cords reaching up through their respective vent tubes and over into the Y 78 and beyond into the common tube fail out of :ill of `the cords.

drawn over a proportional amount, vand the lowest float will at all times dictate -the;positioii of the eye.A A cord 91 is connected to the eye and leads through a tube 80 to the (ill dash board indicator. Y Y

' These cords, when used, may be `of ,any suitable material such as silky fish line `or the like, `and they are'preferably lightand strong and of such material that they will not appreeiablyehrinkor'changeqileir length with repeated wetting in the fuel.

The dash board .indicator-is ShoWn'in-detail in Figs. 2, 3 and 4. It includes ,astationary tube 92 thel front end 4of- "whichdis flanged, as shown at 93, a'iid secured to the -back face'of' a housing 94whicli in turn is flanged, as shown at, 95, and receives the front cover of glass 96. On the front face of the. housing 94 is thescale 97, anda nee-- dle 98 is arranged to move over said scale, as shown in Fig. 4.

Said needle reaches through thehousing and is connected to a section of tubing 99,

the rear end of which Ais journaled at the' -rear end ofthe stationary tube 92 as by.

means of a small ball bearingA 100, lso that the tube 99 can turn easily. .Said tube 99 is provided with a straight slot `101 and the stationary tube 92 is provided withfa curved slot 102.- A cross pin 103 works through bothslots and is connected to the cord 91 already referred to. A spring 104 within the tube 99 tends to force the pin 103 forward so as to keep the cord 91 always under tension. This spring is, however light enough, so that it does not appreciaby modify 4the positions of the floats, and also as each float de cends the lowest float will draw the pin 103 back, moving the spring accordingly.

By properly' shaping the slots 101 and 102 with respect to each other, the scale marks, 9T, mayA be made uniform throughout the iiornial'working range of the device. Furthermore, the front and back ends of said slots may be set at such positionsthat `the needle is not operated either for readings higher than the highestnormal' reading or below the lowest normal reading. When this arrangement is used the floats 'may descend a certain distance inv their respective chambers vwithout moving the needle back from the highest scale reading. `As the floais work within the central portions of their respective chambers, the needle will more back and forth to corrected positions correspondingly thereto; but if the .fuel in any chamber should move below the lowest normal amount of fuel consumption for a u nit distance of road travel, its float would simply remain suspended by its cord, the needle remaining nt the lowest point on its scale.' Y A It will be seen that this arrangement will give :i corrected reading each time a ne.. grouping 'of chambers takes place, and that each chamber is initially entirely full of fuel; 'that at` the next grouping itis connected to the engine and supplies fuel thereto-foi-*a distance of road travel; and that at ltlie'ineirt, grouping'it'i's and its floatbeing thezlowest one of the series, will dictate the reading-of the indicator needl e. .lt will-also be seenA that will remain unchanged until the next grouping' of chainbci'sfakes place, or until the next floatof themseries moves to a lower sitionilan'd assumes control 4of .the n e. At the next grou ingof chambers the float previouslycontro g the-needle to the to f its chamberas the ehamberis filled an the-corrected `reading will remain Von the indicator until a new grouping takes place or until the next float moves to an even lower position.- A A If desired, suitable pulleys orrollers may be provided for the cords at the ints where they `around lthe bends in e tubes, but ordinarily it will be found unnecessary .to use lthe same.

A.At a point directly between the fuel supply anddehveryppipes 53 and 54 is a va'lve 105, best' shown in Fig. 1. .Sid valve .is normall closed inthe sition indicated in Fig. 1,' ut when turn .through a suflicient angle establishes a direct connection between the. fuel supply and delivery pipes, thus ensuring a continuous supply of fuel to the engine irrespective of any operation of the metering device itself. This valve may be connected to the dash board by aline 106, as Ashrown in Fig. 15, and may thus be controlled by the driver. If desired, it may be automatically operated to ensure' automatic of the valve whenever any one of the floats falls below a predetermined low point. Such an arrangement .will -be ex- 'plained hereinafter.

If desired, the valve 48 maybe lubricated, as by the use of castor oil placed in the passage 6l and fed to the surfaces of said valve by passages 107 in thevalve itself leading to the wearing surfaces of the valve. Ordinarily, no such lubrication will'be needed, since the valve is moved very slowly and ies curved'slot 118'und the Jeol'lesp |07, 108 and 1 O9'respcctivcly. Each vspindle has its'lou'er end working alstep hearing 110` at the lower' end of'itsjchainber.

The upper portions of thefspinlles;:are coni'. I l

given` in any convenient manner as-by the ncctcd tei-'small' rods"v2l.=1'.`1,'` 112 and 11341eding up throughfthe' eorrespondlng1 xentltube's and provided with bearings '114. iitthe'ir u 's turnedI over at right *angles intoffingers '115, llalid 117. i l f Each of the spindles is provided :f with a @amaca has a"cross pin .',Stlid slot and 'having it'slute-en'n Working ln'a 'vertical guide" 'groovefrl20 ^in" tl1e outer of the chamber. Cnsequentlj" llilifloat rises :indians aliaurnsifsspindiq ma gne direction'and then lin'fthe*'otlie'ri Y 'A pairof Yf sha fbrackets'121fand 122 are supported'b'yjt e upper ends fof the vent tubes, and a central stem-123 is journaled at the centers of thesebrfackets.'AA .A gear wheel 124 isv connected :to 'said stem 'above the bracket 121, and'gear Wheels125",'126-and 12T are journaledV ont-he vupper portions of the vent tubes and mesh with -the"conan1on eenter'vgea'r' wheel *124. f" Consequently, all four of the' gears'turn back forth as a.

Studs 128,*129 'andf130`projeet upwardly from the gear 'wheels125,' 126. and 127, respectively, in position-'to-be engagedby the fingers 115, 116 and .117 as theyscome around, and a spring 131 connected to'thestem4 l123 and bracket 122 tends to turn the central gear 124, and consequently' the entrained gears 125, 126 and 127 to -such positions as tolcarry all of the'studs 128,' 129 and 1'30'around to points farthest removedfrom the central gear 124- pf All ofthe fingers '115, 116 and 1 17'jre so positioned that when allof the vfloats are at the topof their-respective chambers, said fingers all point outwardly-(see finger'll of Fig. 13) end all of the studs may then .rest against said fingers, the gears 125, 126

and 127 standing in the proper positions to bring the studs against 'the fingers. 'The lowering of any float will consequently -cause its finger to press against the correspondingl stud and turn the gear train and stem 123 against the springr 131, and the amount'of such turning will depend upon the lowering of the float.' Whichever float is the lowest will determine' the amountlof'movement of the gear train ands tem against the spring 131, and if a' successive float. is not a'slow as a. preceding one, the spring willbe allowed to move the gear train bac'k until the corres onding stud comes -into actual contact with t e finger of sucli'higher float. Therej 'lhe position of the stem v123 is therefore f an indication of the 'p`osition of thecontroll. ling. float and, therefore," determines the reading gallon.` A

lThe indieationatl the dashboard can be of the instrumentlin miles per 'means f iii' shaft'132 :and spira'l gears 1t should noted that'iirthc 1l'nese'nt'jinstance. vthe "-vent .should "Stand high enough top re'enFanyoverflowing of fuel.

ilurtheinnere,V by' .propcrshapingof 'the slots 4 118 or'tl'ie'spiral gea1s'133 orboth, it possible to'finsure af .uniformly graduated scale itliroughoflittlieiiriiial vof readings..

` i Referrfinfhfg"t to construction 'in Figs. 1G, 17, 18 and 19,'iln` this .ca`s`e,`1 vhave made pro- "visio'n ,notionlffor 'giving the indication Vof r'atio, but have also provided for cumulatively metering thefquantity of' fuel'fed through -the "dcvxee'b 'In this connection, it will be thro ugh. 'the device.

will, therefore' Ihe a nie'sure'ofthequantity 'of fuel metered *1n the present instance',` 1 establish a gear train'including the gears $138,' 139 and 140 corresponding to the stems 135, 13G and 13T,

respectively, said gears meshing ivith a central gear 141."A Each of the'slems 135, 136

and137 has secured to its upper end a clutch block 142 u'orking withinan openinein the corresponding gear, said clutch bloeit being Yrecessed at onepoint,=as 'shown at 143, and a` l.spring pressed clutch Eball 144 being placed m said' reces.` The `arrangement is ,such that lon ne vertical mveinent'of the fioat the corresponding ear 138,139 or 140 will be hitched aroundga distance proportional to the vertical movement of the float, and, therefore, proportionaltothe quantity of fuel metered. Preferablythis metering,r :ic-

tion is performed on theup stroke. of eagh float. This is'desirable since on the down stroke the f ioat is either'called upon to turn the other gear train or to retain the same in a certain position, so by performing the metering action on the. up stroke the work of the floats is divided'and'is not all imposed on one vertical movement.

In connection with the foregoing, it will l be understood that m the construction of vloo upper portions of the vent tubes, asiiidi` cated in Fig. 19. i

l `urthermore, the various gear` trains are conveniently supported by a pair of circular plates 155 audits, the plate 155 A l ably of som'e distinctive color such as red or vent tubes, andthe plate 156 by a'series of gr f posts 157. reaching upwards from. the

turn supported bythe upper portions ofthe plate 155.

depends uponA the ratio, sad'sliaft Amay. be conveniently connected to the valve 105 at the lower end of the structure for establishing direct coiniuunication past the metering device to allow for continuousand uninterrupted feed of fuel in case the metering device should fail to function, or if for any reason the ratio should fall abnormally low.

l have, therefore, illustrated in Fig. Va finger 158 on the stem of the `valve105, together with a spring 159 which tends to turn the valve into the open position. Such openingr movement is normally resisted by abell crank 160 pivotedv at the point 161 and having a shoulder. 162 on one arm against which the. finger 15S normally engages. The shaft 152 has a cran'liz'163V on its back end which operates a rod .164 reaching down through an opening in the other arm of the bell crank 160 and having an adjustable stop 165 which will engage said arm of the bell crank when the rod 164 is forced down abnormally low. iSuch abnormal' movement will only 'take place when the ratio falls below a predetermined amount, as, for example, when a .float approaches within one inch of the hottoni'of its chamber. Thereupon the bell crank will -lie rocked, the finger 158 disengaged, and the valve will be snapped open and will remain in such position indefinitely until restored by the driver. The driver may adjust. the position of the stop 165 so that such @cutting out action will occurat any desired lower limit of ratio reading.

Said valve may be operated by the rod 106 from the dash board, as indicated in Fig, 29, so that the operator can restore the valve to the closed position when he desires to do so. It desired, a s' nal device may be operated by the opening di the valve 105 so as tol give either a visible or audible vsignal to the driver. Forexainple, acontact ctric point `169 may be: inco 167, is indicated in Fig. 20, iii position to be engaged by the finger 15S after the valve is opened, thus closing an electric circuit includiiig the battery 16S and lamp 16S) on the dash board. This lamp will remainV illiinii.- natedaslong as the valve is in the open position so 'as to give a visible signal until the operator againcloses thevalve. It will be noted thatl Ifha've lprovided means for givinga signal to the'driver when the ratio falls below 'a certain 'redetermin'ed amount; or means for advisiner the drive r of the fact that the metering device has been automatically'cut out of service.' If desired,'the lamp rporated `directly with the indicator ori-"the dash board, as shown at the upperportion of the instrument illustrated in 1g. 21. "In such the lamp is prefer- Q g therein illustrated a' convenient form of dash Inasinucli asptlie position of tlieshaft 152`A board' instrument for giving' the indications of'miles per 'gallon ortlie cumulative'read'- ingsV of amount offuel metered, or both indications as desiredf The instrument illus` trated'gives both indications `and constitutes a-very'convenient and desirable type of device. For thisvpi'irpose, said instrument includes a face plate 170 having a flange 171 around its' border, said flange retaining a glass cover 172 in position vagainst a spacer This face plate slotted opening 174 formed about a center 175, and behind this slotted o` ning -is a curved sheet 176 which is spaced ackwardly a sufiicient distance to accommodate a swinging needle A177. .Sa-id needle is carried by a stem 178 journaled between the face .plate 170 and a bracket 179, as shown in Figs. 22 and 23.

A segmental gear 180 is secured to the stem 178 and meshes withanother segmental gear 1'81 which is j ournaled between the back of the plate 176 and a bracket 182. AThe ear.181 is carried by a stem 183 which pro- ]ects through the bracket 182 and may be connectedto a suitable` shaft such as a section of piano wire 184 by means of a cou pling 185. 'The shaft 184 is connected to the is provided with a curvedllO sliaft152 `by means of a coupling 186, as

shown in Fig. 19. ,Consequently the position of the shaft 152 dictates the position of nthe needle, 177.

The front face of the plate 176 is suitably 1uarked,vas indicated in Fig. 21, to designate the desired ratio -such as miles per gallon..`

By properly shaping the segmental gears in the figures. Furthermore, by properly shaping these gears it is poible to allow for practicallya complete revolution of the shaft 152 and its companion shaft 184, While only causing a swing of the needle through 90 or 120 of arc. This is a dcsira`ble .ar rangement and will result iii greater accuracy of reading.

At another point in the face plate 170 is :in opening 18S behind which is a drum 189 having its shaftjournaled in lupper and lower brackets 190 and 191 which 'are secured to the back of the face plate 170. This drum is provided with markings about itsperi liery, as shown in the different figures, which are visible through .the opening 188` and desivnate gallons in the storage tank. Preferalily these markings occupy the grea tion of a complete revolution.

Alongside of the drum is'a vertical stem 192 the upper end of which carries ar'idisk 193. Said stein is joui'naled 'in'the bracket 190 on the .b 'ack of the face plate 170. The stein also carries a friction roller 195 fwhich is adapted to engage the upper portion of the drum so as to turn the saine by friction.

Extending in a horizontal direction above the disk 193 is a. shaft 190 which is journaled between the face plate and an ariii 197 of the bracket 192. Said Ashaft carries a friction wheel 198 which engages the disk 193 near its forward edge so as to rotate the stem 192 and thus the drum. The shaft 196 is connected by a coupling 199 with another shaft 200 of piano wire or the like.' This shaft 200 is in turn connected by a cou ling 201 with the shaft 149-'which is (urne cumulatively with the consumption of fuel.

The stein 192 preferablyI reaches down through the instrument easing and has a thumb piece 203 on its lower end by which it can be manipulated by the driver, as is clearly evident from Figs. 21 and 23. Said stein is normally raised by a spring 204 so as to retain the disk 193 in' engagement with the friction wheel 198, but by pulling down slightly on the thumb piece 203 the driver is able to disengage the disk 193 from the friction wheel so as to turn the stem 192 and thus the drum 189 to reset the saine.

The parts are so arranged that as fuel is consumed the drum 189 turns baekwardly so as to read consecutively lower amounts. ll'hen a new supply of fuel is placed in the storage tank` the driver should reset the d runi [89 to a correspondingly higlieigreading. For example, if said drum/reads six and ten gallons are placed in the tank, he should then reset the indicator to read si.\'- tecn. this being the amount of fuel then available.

By using flexible =lnifts 1.84 and 200 of sueh imiterial as piano wireor phosphor bronze wire, provision is made for a nonalignment of the parts, while at the saine time a definite positive connection is estabter porf lished. If desired, a tubular section 205 may be extended between the bracket 153 (see Fig. 19) and the back of the casing 202 (see Figs. 22 and 24). This will establish a definite rigid connection between the metering and indicatin devices and at the time protect the flexible shafts 184 and It will be noted that in the arrangement thus far described the resetting of the cumulative indicator is manual. If for any reason the device should not'be resetwhen a new supply-of fuel,'is taken on, it will rd la lower amount than' is actually availa e.

order to prevent the'drum 189 from turning backwardly beyond the zero reading position, I have provided a pin 20G on said drum which will come into engagement with the lug 207 on the bracket 191. at the proper time, as shown in Figs..22 and 23.

I f desired means may be provided. for automatically resettin the drum' reading when a newsupply of el is taken on. For this purpose, I have provided a metering device which is illustrated in detail in Figs. 25, 26, 27 and 28. The saine is conveniently threaded into the filler opening 208 of the storage tank 209. Said metering device includes a'casing comprising upper and lower sections 210 and 211, the upper section preferably having a spout 212 reaching upwardly at van angle and into which the fuel hose may b'einserted in the well understood manner. The upper end of this spout may be internally threaded, as shown at 213, to re- Celve 8. C21

Extending around the upper section 210 is an annular passage 214 into which the-fuel is initially delivered, said passage being* open around the entire periphery of the deriewith the'exception of a short section immediately beneath the filler spout 212 which is closed by a short partition 215 (see Fig. 25). This will ensure a distribution of the fuel around the major Aportion of the passage.

The lower section 211 is provided with a series of curved varies 216 which reach towards the center of thedevicc and give the fuel a rotary motion as it is discharged towards the center of the device.

The lower section 211 isprovided with a. downwardly depending neck 21T whichl can be threaded into the filler opening 208. as indicated in Fig. 25. A series of radial arms 218 in the neck 217 carry a central member 219 within which is threaded a stem bearing 225 reaching down through a cover late 226. A worm and gear connect-ion 227 1s established from the` stem 222 to a horizontal shaft 228 reaching out sidewise from the upper section 210.

A circular metal disk 229 of4 aluminum or brass is carried by the stem 222, and a magnet .230 embraces the edge portion of this disk so that a-drag is created on the disk as it rotates. The magnet 230 may be mounted on a pin 231 by which its position can be adjusted in order to regulate the amountof this drag.

The reaction turbine has its blades 232 facing in the proper direction to receive the liquid discharge thereagainst so as to rotate the turbine by a reaction effect.

Upon delivering a supply of fuel through the neck 212, the. same is distributed more or less around the passage 214 and rushes down through the lower section 211 where it is deflected by the vanes 216 against the vanes 232 of the reaction turbine. The turbine is thus rotated, but the drag created by thepermanent magnet will prevent overrunning of the turbine after the flow of liquid ceases. The number of revolutions of the turbine will depend directly upon the volume of liquid delivered through it and this is true practically irrespective of the momentary rate of flow within practical limits.

.From the above it appears that the shaft 228 will be rotated in direct proportion to the volume of liquid introduced into the tank. This shaft may be connected by a section of piano wire or other suitable shafting 233 and a coupling 234 (see Fig. 24) with a shaft 235 in the dash board instrument carrying a friction wheel 236. A stem 237 is journaled in the bracket 194 and has a friction disk 238 at its upper end. The wheel 236 drives the disk 238. Another friction wheel 239 is mounted on the stem 237 at a proper position to enga-ge the drum 189 when the stem 237 is swung over a slight amount. 'lhe lower portion of the stem 237 is journaled in the bracket 191 by a slotted openin (the stem 192 also being journalcd by a s otted opening); and a link 240 connects together the lower port-ions of both of the stems 192 and 237. A spring 241 normally moves the link 240 over into the position of Fig. 22 so as to keep the friction wheel 95 against the drum 189, but said spring is relatively light, so that a comparatively small pressure will throw the link over to the left and reverse the action, carrying the friction wheel 195 away from and the friction wheel 239 against the drum-189.

For the above purpose, a collar 242 is mounted on the lower portion of the stem 23T with a frictional engagement, .said collar having a finger 243 adapted to engage a staf tionary bracket 244. When the stem 237 first commences to turn (upon the introduction of a new supply of fuel into the tank), the

collar 242 twists around and causes a reaction between the finger 243 and the bracket 244 which carries the stem 237 over and throws its friction wheel 239 against the drum (simultaneously moving the friction wheel 195 from the drum). The introduction of a new supply will thus cause the drum t0 be properly rotated to a new position where it indicates the amount of fuel actually in the tank. The spring 241 will reengage the friction wheel with the drum as soon asthe introduction of new fuel supply ceases.

It will be understood that although I have illustrated the indicating device itself as rovided with the supplemental stem 237, riction wheel 239, disk 238, shaft 235, friction wheel 236 and link 240, etc., nevertheless the same are not needed to the proper operation of the indicating device for showing quantity of fuel in the tank when` the device is used for resetting by hand operation.

It will also be understood that the metering device shown in Figs. 25, 26, 27 and 28 may be used entirely independently of any mechanism for showing miles per gallon or any other ratio, and said metering device may also be used either in conjunction with a dash board indicator, or as a separate self contained unit. For example, a suitable counting device may be placed at the position of the meter itself so as to accumulate the volume of liquid introduced through it, in which case it will serve to maintain a permanent registration of the total amount of fuel introduced into the tank. Furthermore, the metering device disclosed herein and illustrated in Figs. 25 to 28 inclusive herein is the subject of a copending a plication for Letters Patent of the United tates, Serial No. 64,557, filed October 24, 1925, and therefore I do not claim the same herein per se, but make such claim in such other application.

I wish to point out the fact that although I have herein illustrated and described a metering device as used in conjunction with a specific type of vacuum fuel feed, still I do not intend to limit myself to this particular fuel feed nor any other, except as I may do so in the claims. For example, the device may be used in connection with other forms of vacuum fuel feed, as well as the feeding of fuel directly by gravity, pressure, or such pumping devices as electrically driven pumps. In the case of fuel supplied either by pressure or by special pumping devices, it may he desirable to use a float chamber in advance of the metering device itself so as to establish a suply of fuel at the desired elevation, so that it can run by gravity to the present metering device. The system of feeding fuel herein disclosed, considered as a system is the subject-matter of another and co-pending application for Letters Patent of the United States, and therefore I do not claim the same herein .as a' stem, but include such claims in said divisional ap lication.

t will be noted thatthe present application discloses an arrangement wherein there is provided a fuel-chamber of definite or known capacity having a vent tube 1n its roof reaching upwards a sufficient helghtto balance the normal pressure of fuel deliv-A ered to the device by the fuel supply means so that the fuel will not overflow therefrom, and that there is provided a fuel supply connection for delivering fuel to this chamber and also a fuel delivery connection leading from said chamber to the carburetter of the engine, together with valve means whereby the delivery 'of fuel to the engine may be exclusively from said chamber unt-il the chamber is completely emptied, whereby 1t is possible to ascertain the engine performance by ascertaining the distance travelled on such known amount of fuel, either automatically by means of a definite indicator or by calculations based on the measured mileage travelled on said known amount of` fuel. Inasmuch as the general arrangement 1 of such device constitutes the subject-matter of a divisional application for Letters Patent, I do not claim the same herein Specifically,

-but do so in suc-h divisional application.

While I have herein shown and described only certain embodiments of the features of my present invention, still I do not intend to limit myself to the same, except as I may do so in the claims.

I claim:

l. In a motor vehicle having a carburetor and a vacuum fuel feed system located at a higher level than the carburetor and adapted to feed fuel thereto, the level of fuel in the vacuum feeding system being variable, means interposed between the vacuum fuel feeding s stem and the carburetor for metering the uel in comparisonto road travel, said means including a plurality of closed chambers of substantially equal size havingr their roofs located below the normal low level of liquid in the vacuum feeding system and having independent vent tubes reaching upwardly from said roofs to a higher elevation than the normal high liquid level of the vacuum feeding system, a valve adjacent to the lower ends of all of said chambers and adapted to control them all, means for advancing said valve substantially in proportion to road travel of the vehicle, a fuel supply connection from the vac-- uum feeding system to said valve, a fuel delivery connection from said valve to the carburetor, passages in the valve operable to successively connect each chamber to the fuel supply connection, then to the fuel delivery connection, and then to seal the chamber, a float within each chamber controlled by the level of fuel therein, an indicator including a movable element, connections reaching from the res ective floats through the respective vent tubes to the exterior of the chambers, and means in conjunction with said connections operable,`to move said eiement, to the position dictated bv the lowermost float, substantially as described.

2. In a motor vehicle having a carburetor and means for supplying fuel thereto from a position of variable elevation higher than the carburetor, means interposed between said 'supply means and the carburetor for metering the fuel in comparison to road travel, said metering .means including a plurality of closed chambers of substantially equal size having their roofs-located below the normal low llevel of l'quid in the supply means, and having independent vent tubes reaching upwardly from said roofs to a higher elevation than the normal high liquid level of the feeding means, a valve adjacent to the lower ends' of Asaid chambers and adapted to control them all, means for advancing said valve substantially in proportion to road travel of the vehicle, a fuel supply connection from the supply means to said valve, ya fuel delivery connection from said valve to the carburetor, passages in the valve operable to successively connect each chamber to the fuel supply connection, then to the fuel delivery connection, and then to seal the chamber, a float within each chamber controlled by the level of fuel therein, an indicator, and connections from the floats to the indicator operable to cause said indicator to read according to the position of the lowermost float, substantially as described.

3. In a motor vehicle having a carburetor and means for supplying fuel thereto from a position of variable elevation higher than the carburetor, means interposed between said supply means and the carburetor for metering the fuel in compariram to road travel, said metering means including a plurality of closed chambers of substantially equal size having their roofs located below the normal low level of liquid in the sup ily `means, and having independent vent tubes reaching upwardly from said roofs to a higher elevation than the normal high liquid level of the feeding means, a valve adjacent to the lower .'ends of said chambers and adapted to control them all, means for advancing said valve substantially in proportion to road travel of the vehicle, a. fuel supply connection from the supply means to sald valve, a fuel delivery connection from said valve to the carburetor, passages in the .valve operable to successively connect each level of liquid in the chambers, substantially as described. 1

4. VIn a motor vehicle having aV carburetor and means for feeding the fuel therefor, means interposed between the fuel feeding means and the carburetor for metering the fuel incomparison to road travel, saida meterinfr 'means includingr a plurality of closed cham ers of substantially equal size having independent vent tubes reaching upwardly from their roofs to a sufficient elevation to balance the pressure' of fuel supplied in them, a valve adjacent to the lower ends of said chambers and adapted to control them all, means for' advancing said valve substantially in pro ortion to road travel of the vehicle, a fue supply connection from the feeding means' to said valve, a fuel delivery connection frfom said valve to the carburetor, passages' in the valve operable to successively connect each chamber to the fuel supply connection, then to the fuel delivery connection, andthen to seal the chamber, an indicator, and connections from the interlors of the chambers reaching through the riespective vent tubesV to the indicator operable to cause said indicator to read according to the level of Ali uid in the controlling chamber, substantial y as described. l

5. vIna motor vehicle having a carburetor and means for supplyingr fuel therefor, a metering chamber, a vent tube reaching upwardly from its roof to a sufficient elevation to balance the normal pressure Vo f fuel delivered to `the chamber, a valve for 'controlling said chamber, a connection for the supply `of fuel to said valve, a connection for the delivery of fuel from the valve to the carburetor, passages in the valve operable to successively connect the chamber to the fuel supply connection. then to the fuelA delivery connection, and then to seal the chamber, a float within the'chambcr controlled by the level of fuel therein, an indicater, and connections from the float to the indicator extending' .throughtbc vent tube and operable to cause' the indicator to assume a position corresponding to the level of fuel in thechamber, substantially as described.

6. In a motor vehicle having a carburetor and means forsupplying fuel therefor, a metering chamber, a vent tube reaching up- 'ardly from its roof to a sufficient elevation to balance the. normal pressure of fuel delivered to the chamber, a valve for controlling said chamber, a. connection for the` supply of f uel to said valve, a connection for the delivery of fuel from thev valve to the carburetor, passages in the valve operable lo successively connect the chamber to t.he fuel supply connection, then to the fuel delivery connection, and then to seal the chamber,

and means extending from the interior of in the valveoperable to successively connect the chamber to the' fuel supply connection,

then to the fuel delivery connection, and then to yseal the chamber, an indicator, Land mechanical connections between the interior of the chamberand the indicator operable. to cause the indicator to assume a position depending upon the elevation of4 fuel within the chamber, substantially as described.

8. ln a motor vehicle having a carburetor and means for supplying fuel therefor, means interposed between the fuel supply lmeans and the carburetor for metering the fuel in comparison toroad travel, said means including aplurality of chambers of substantially equal size, a valve for controlling all of said chambers, means for advancing said valve substantially in proportion to road travel of the vehicle, a fuel supply connection for supplying fuel vto said valve, a -fuel delivery connection for the delivery of fuel from the valve to the carburetor passages in the valve operable to successively connect each chamber to the fuel supply `connection, then to the fuel delivery connection and then to seal the chamber, an indicator, and mechanical means extending between the i-ntcriors of the chaud-1ers andv indicator operable to cause thc indicator to assume a position dictated by the lmvermost level o f fuel in the chamber` substantially as described.

9. A dcvicc. of the class described comprisingr in combination a seri'cs vof chambers `of substantially equal size, all of said chambers `having roofs and vent.A tubcs reaching up Wards from said roofs, a valve adjacent to thc lower portions of`said .chambers and adapted to control t-hcm all, means for advancing said valve substantially in proportion to road travel of the vehicle, a fuel supply connection to said valve, a fuel delivery,connection from said valve, passages in the valve operable to successively connect cach chamber to the fuel supply connection, then to the fuel dclivcry connection, and then to seal the chamber` a float within each chamber controlled b thc. lcvcl of fuel therein, a movable clcmcnt exterior lo the device, and connections from all of the floats extending through the rcspcctiv'e vent tubes to said movable element operable to move said element to a position dictated by the lowermost fioat, substantially as described.

10. A device of the class described comprising in combination a series of chambers of substantially equal size, a valve adjacent to the lower portions of said chambers and adapted to control them all, means for advancing Said valve substantially in proportion to road travel of the vehicle, a fuel supply connection to said valve, a fuel delivery connection from said valve, passages in the valve operable tosuccessively connect each chamber to the fuel supply connection, then to the fuel delivery connection and then to seal the cliainber,a float .within each chamber controlled by the level of fu'el therein, a movable element exterior to the device, and mechanical connections from all of the floats reaching to -the movable element and dperable to bring said element to a position dictated by the lowermost float, substantially as described. Y

` 1 1. A device of the class described coniprising in combination a chamber, a valve for controlling said chamber. means for advancing said valve substantially in proportion to road travel of the vehicle, a fuel supply connection to said valve, a fuel dclivery connection from said valve, passages `in the valve operable to successively connect Yand means for feeding fuel therefor, means interposed between the fuel feeding means and the carburetor for metering the fuel in comparison to road travel` said metering means including a closed chamber, a valve for controlling the same, means for advancing said valve substantially in proportion to road travel of the vehicle, a fuel supply connection from the feeding means to said valve` a fuel delivery connection from the valve to the carburetor, passages in the valve operable to successively connect the chamber to the fuel supply connection then to the fuel delivery connection and then to seal the chamber, a fioat within the chamber controlled by the level of fuel therein, a movable element, connections from the float to the movable element operable to cause said element to assume a position depending upon the float, a shunt valve intermediate between the fuel supply and fuel delivery connections, means normally tending to move said valve to open position, means for locking said valvevin the closed position, and consame when the float moves below a predetermined position, substantially as described.

13. In a motor vehicle having a carburetor and means\ for feeding fuel therefor, means interposedsebetween the fuel feeding means and the carburetor for meteringr the fuel in comparison to road travel, said metering means including a closedchamber, a valve for controlling the same, means for advancing said valve substantially in -proportion to road travelof the vehicle, a fuel supply coniicction from the feeding means to said valve, a fuel delivery connection from the valve to'the carburetor, .passages in the valve operable to 'successively connect the chamber to the fuel supply connection, then to the fuel delivery connection, and then to seal the chamber, a float within the chamber controlled by the level of fuel therein,a mov-l able element, connections from the float to the movable element operable to cause said element to assume a position depending upon the float, a shunt 'valve intermediate between the fuel supply and fuel delivery connections, and connections between the movable element and said shunt valve effective to insure opening of the valve when the float moves below a predetermined position, sub# stantially as described.

14. In a motor vehicle having a. carburetor and means for feeding fuel therefor, means interposed between the fuel feeding means and the carburetor for metering the fuel in comparison to road travel, said metering means including a lurality" of closed chambers of substantially equal size, means for successively completely filling each chamber with fuel, then connectingthe carburetor exclusively to said cha-mberto insure delivery of fuel solely from sai? chamber, then sealing the chamber after a predetermined distance of road trave floats in the chambers, an indicator,'andA eans operable to.y cause said indicator to indicate at all times in accordance with the position of the lowest float, substantially as described.

15. In a motor vehicle having a carburetor and means for feeding fuel therefor, means interposed between the fuel feeding means and the carburetor for metering the fuel in comparison to road travel, said metering means including a chamber; means for first completely filling said chamber kwith the fuel, thereafter insuring delivery of fuel to the carburetor exclusively from said chamber for a predetermined distance of road travel, thereafter sealing said chamber, a float in the chamber, anindicator, and means for causing said indicator to indicate according to the position of the float, substantially as described.

16. A metering device for the purpose specified comprising in combination a series of chambers of substantially uniform cross section throughout their height, a valve for controlling all of said chambers, a fuel supply connection to the valve, a fuel delivery connection from the valve, means for advancing the valve in proportion to one variable, assages in the. valve operable effectively to l each chamber from the fuel supply connection, then connect such chamber to the fuel delivery connection, and then to seal such chamber, floats in the respective chambers, an indicator, and connnon means connecting the flo`ats and indicator operable effectively to cause the indicator' to indicate at all times in accordance with the position of the lowest float, and including co-operating gears of variable ratio effectively to insure uniform amounts of movement of the indicator corresponding to uniform changes of ratio of said variable compared to fuel throughout the working range of the device, substantially as described.

17. A metering device for the purpose specified comprising in combination a series of chambers of substantially uniform cross section throughout their height, a valve for controlling all of said chambers, a fuel supply connection to the valve, a fuel delivery connection from the valve, means for advancing the valve in proportion to one variable, passages in the valve operable effectively to lill each chamber from the fuel supply connection, then connect such chamber to the fuel delivery connection, and then to seal such chamber, floats in the respective chambers, an indicator, and mechanical means intermediate between the floats and indicator operable effectively to cause the indicator to indicate at all times in accordance with the position of the lowermost oat and including means'operable effectively to insure uniform amounts of movement of the indicator corresponding to uniform changes of ratio of said variable compared to fuel throughout the normal Working range of the device, substantially as described.

18. In a device of the class described, the combination of a series of chambers for fuel located around a common vertical axis, a

' common valve for said chambers located adjacent to their lower ends, connections from the chambers to said valve, a fuel supply connection to the valve, a fuel delivery connection from the valve, a float in each cl1am ber, vent tubes extending vertically from the roofs of the chambers to an elevation greater than the elevation of the probable fuel supply, an indicator, individual operating connections from the several floats reaching through the several vent tubes to the exteriors of the chambers, and a common connection from said individual operating connections to the indicator, operable to cause said indica-tor to read according to the position of the lou'ermost float, substantially as described.

19. In a device of the class described, the combination of a series of chambers for fuel, a common valve for said chambers to control the supply of fuel to and delivery of fuel from said chambers, connections intermediate between the several chambers and said valve, a fuel supply connection to the valve, a fuel delivery connection from the valve, a. float in each chamber, a vent tube. reaching upwards from the roof of each chamber, an indicator, individual operating connections from the several floats reaching up through the respective vent tubes, and a common connection from said individual connections to the indicator, operable to cause said indicator to read according to` the position of the lowcrmost float, substantially as described.

20. In a device of the class described, the combination of a series of chambers for fuel, valve means for said chamber to control the supply of fuel to and delivery of fuel from the respective chambers, afloat in each chamber, a vent tube reaching upwards from the roof of each chamber, an indicator, individual operating connections from the several floats reaching up through the respective vent tubes, and a common connection from said individual connections to the indicator, operable to cause said indicator to Aread according to the position of the lowermost float, substantially as described.

21. In a device of the class described, the combination of a series of chambers for fuel, valve means for said chambers, to control the supply of fuel to and delivery of fuel from the respective chambers a. float in each chamber, a vent tube reaching upwards from the roof of each chamber, ,a rotary shaft in each chamber reaching up through the vent tube thereof, an operative connection from each float to its shaft serving to rotate the shaft in every instance to a position determined by the position of the float, a gear train exterior to the vent tubes, includingr a common gear member and another gear member individual to each vent tube and meshing with said common gear member, an indicator` connections from the common gear member thereto, .and means in conjunction with each shaft and the corresponding gear member operable to move the gear train tov a position dictated by the lowermost float, substantially as described.

22. In a device of the class described, the combination of a series of chambers for fuel, valve means for said chambers, to control the supply of fuel to and delivery of fuel from the respective chambers, a float in each chamber, a vent tube reaching upwards from the roof of each chamber, a rotary shaft in each chamber reaching up through the vent tube thereof, an operative connection from each float to its shaft serving to rotate the shaft in every .instance to a position determined by the position of the float, an indicator, and a gear train intermediate between tlie indicator and the several shafts operable to move the indicator to the position dictated by the position of the lowermost float` substantially as de'- sciibed. v

23. A metering device for the purpose specified including in combination a series of chambers of substantially equal size, a valve for controlling all of said chambers, a fuel supply connection to said valve, a fuel delivery connection from the valve, means for advancing the valve in proportion .to one variable, indicating means, integrating means, means for causing the indicating means to indicate at all times 1n accordance with the level. of liquid in that chamber containing the smallest amount of fuel, and means for causing the integrating means to integrate according to vertical movements of the liquid into dili'erent chambers, substantially as described.

24. In' a device of the 'class described, the combination with an engine operatively connectcd to an element, a chamber for fuel, means for completely filling said chamber with the fuel, thereafter insurin delivery of fuel from said chamber for a etermined unit amount of operation of said element, thereafter sealing said chamber against such delivery therefrom, a 4float iii said chamber, an indicator, and means for causing said indicator to indicate according to the position of the float, substantially as described.

THOMAS A. BANNING, Ja 

